# Altimeter+ vs NRST

The clearest difference is price: NRST at Free against Altimeter+'s $1.99. Altimeter+'s advantage is in-app purchases (none vs 6) and review sentiment (75% vs 47%). On rating, update cadence, ads and device support there is nothing between them.

NRST is free to download; Altimeter+ costs $1.99 up front. NRST sells 6 in-app purchases, starting at $0.99 per year. Altimeter+ asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.5 for Altimeter+ against 4.5 for NRST. That said, the two scores are not equally well evidenced: Altimeter+ has 700 ratings behind it against 8, so its average is the more settled of the two. Written reviews are what separate them: 75% of Altimeter+'s written reviews are positive against 47% of NRST's.

Altimeter+ ships an update every 2 months, NRST every 4 months. The most recent releases landed on September 23, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Altimeter+ | NRST |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [4.5 (700 ratings)](https://appshunter.io/ios/app/altimeter-plus/id417204570/reviews) | [4.5 (8 ratings)](https://appshunter.io/ios/app/nrst/id828514590/reviews) |
| Number of ratings | **700** | 8 |
| Positive reviews | **74.9% of reviews** | 46.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | **Free** | Subscription |
| Best chart rank | **#20** | — |
| Size | 45 MB | 50 MB |
| Requires iOS | **11.1** | 17.0 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Sichtwerk AG](https://appshunter.io/developer/410851296) | [Toonsy Net](https://appshunter.io/developer/319239704) |

## What reviewers say

### Altimeter+

[App page](https://appshunter.io/ios/app/altimeter-plus/id417204570)

**Currently charting:** #20 Top Paid · Navigation (US App Store)

This app measures your current altitude using GPS, ASTER data, or your device's barometer. It offers an integrated map with peak data, a compass, and distance grids, functioning even without active GPS.

**Highlights:** GPS, ASTER, and barometer altitude measurement, Average altitude calculation, Integral map with peak indicator, Compass and distance grid, Apple Watch support, Works without active GPS

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Accurate and reliable
- 🗺️ Useful map and GPS features
- 💡 Helpful for hiking, flying, and various activities
- 🔍 Precise altitude readings
- 🔨 Simple and easy to use

**What reviewers complain about**

- 🐛 Calibration issues on Apple Watch
- 🔋 High battery consumption on Apple Watch
- 🌞 Difficult to read in bright sunlight
- 🤖 Compatibility issues with newer iOS versions

**Reported bugs**

- App crashes when trying to calibrate or access settings
- Altimeter readings are inaccurate or inconsistent
- App not working on certain devices or iOS versions

**Requested features**

- Add option to display altitude in feet or meters
- Implement automatic calibration using GPS
- Add complication support for Apple Watch
- Provide above ground level (AGL) altitude reading


### NRST

[App page](https://appshunter.io/ios/app/nrst/id828514590)

This app helps pilots navigate by providing essential airport information, including distance, elevation, and required descent rates. It offers real-time data updates and customizable descent settings for various aircraft types. Worldwide airport coverage is available, with daily database updates.

**Highlights:** Real-time airport data, Customizable descent rate, Worldwide airport coverage, Filter airports by runway, Glide distance calculation, Watch app integration

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Early Adopter Device Subscription | $0.99 | per year |
| Early Adopter Device and Watch Bronze | $1.99 | per year |
| Device Only | $11.99 | per year |
| Device Only | $14.99 | per year |
| Device and Watch | $17.99 | per year |
| Device and Watch | $24.99 | per year |


## Frequently asked questions

### Is Altimeter+ free?

Altimeter+ costs $1.99, with no in-app purchases.

### Is NRST free?

NRST is free to download, with in-app purchases available.

### Which has better reviews, Altimeter+ or NRST?

Altimeter+ and NRST are both rated 4.5 out of 5 on the App Store, from 700 and 8 ratings respectively.

### Do Altimeter+ or NRST have ads?

Neither Altimeter+ nor NRST shows ads.

### Which is updated more often, Altimeter+ or NRST?

Altimeter+ ships an update every 2 months, and NRST every 4 months. Most recently, Altimeter+ was updated on September 23, 2026 and NRST on September 14, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*